terrestrial planet
Quick Summary
A terrestrial planet is one of the four inner planets of our solar system: Mercury, Venus, Earth, and Mars. These planets are characterized by their rocky composition and relatively high densities, distinguishing them from the outer gas giants. Earth, for instance, has a layered structure with a metallic core, a silicate mantle, and a crust. The surfaces of terrestrial planets often show evidence of impacts, volcanic activity, and, in Earth's case, extensive geological processes driven by plate tectonics. The study of these planets is a key part of astronomy.1234
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planetPlanets of the solar system…Mercury to Mars, are called terrestrial planets; those from Jupiter to Neptune are called giant planets or Jovian planets. Between these two main groups is a belt of numerous small bodies called asteroids. After Ceres and other larger asteroids were discovered in the early 19th century, the bodies in this…
Read More…Mercury to Mars, are called terrestrial planets; those from Jupiter to Neptune are called giant planets or Jovian planets. Between these two main groups is a belt of numerous small bodies called asteroids. After Ceres and other larger asteroids were discovered in the early 19th century, the bodies in this…
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solar systemPlanets and their moonsThe four inner, or terrestrial, planets—Mercury, Venus, Earth, and Mars—have rocky compositions and densities greater than 3 grams per cubic cm. (Water has a density of 1 gram per cubic cm.) In contrast, the four outer planets, also called the Jovian, or giant, planets—Jupiter, Saturn, Uranus, and Neptune—are large…
Read MoreThe four inner, or terrestrial, planets—Mercury, Venus, Earth, and Mars—have rocky compositions and densities greater than 3 grams per cubic cm. (Water has a density of 1 gram per cubic cm.) In contrast, the four outer planets, also called the Jovian, or giant, planets—Jupiter, Saturn, Uranus, and Neptune—are large…
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